Electric switch.



c, A. BATE-S. ELECTRIC SWITCH.

APPLICATION FILED HAIL 2?. l9".

l,255,126, A Patented Feb. 5, 1918.

1s 1 i T- g l i Inventibr: by CLRRENCE A. Bare-s UNITED STATES PATENT OFFICE.

TLARENCE A. BATES, OF BRIDGEPORT, CONNECTICUT. ASSIGNOR TO THE BRYANT ELECTRIC COMPANY, OF BRIDGEPORT, CONNECTlCUT, A CORPORATION OF CON- Speclfieatlouc! Letters Patent.

Emerald swrrcn.

Patented Feb. 5,1918.

Application filed March 27, 1917. Serial No. 157,695.

To all whom it may concern:

Be it known that I, CLARENCE A. Buns, a

citizen of the United States of America, and residing at Bridgeport in the county of Fairfield and State of vented a certain new and Improved Electric Switch, of which the following is a specificatio My invention relates to electric switches and particularly to switches of the two-way type, the object of my invention bein provide a three point push button switch *Qf simplified and mproved construction.

In the accompanying drawmgs I Figure 1 is a plan of theswltch in which my inventioniscmbodidp Fig. 2 is a section on the line 2'.2, Fig. 1; Fig. 3 is a broken side elevation showing the switch mechanism; and f Fig. 4 is adiagram illustrating the mechanism and the installation for which it isparticularly designed.

The present-switch is of the ush button type and comprises a cup-shape insulatin body 10, the open face of which is spann by a yoke 11 through which the push buttons 12 pass and the ends ofwhich are slotted at 13 to receive .the securing screwsby which the switch is mounted in an outlet box of common type (not shown). Within .the switch chamber are arranged the standards 14:, 15 and 16, the two latter'at opposite corners at one end of the chamber, and the standard 14 at the opposite end of the chain- 35 ber and in line with standard 15. Binding screw 17, at the upper end offstandard 14,-

secures the line wire connection X, while bindin screws 13 and 19 secure the branch wires P, leading to a three-pointswitch S, the terminal 20 of which connects with the other line wire Y. A lamp 21 is arranged in the circuit beyond the terminal 20. The installation for which the switch is specially intended is shown in Fig. 4 and is common for controlling a hall light from either the entrance hall switch or from the second story switch b. To the standard 14 is secured a switch terminal 22 having two contact wings 23, 24, adapted to 'make connection ith the switch blade 25 in either of its tw positions. ,A switch terminal 26 is mounted on the: standard 15 and is engaged by one end f the switch blade 25 when its opposite end is engaged with donnecticut, have" inpressed escapement plate 34.

the wing 23 of the terminal 22. The double blade 25 is electrically and mechanically connected by an integral I 'brid piece 27 with the cooperating single bln e i 28, which estends only on one side of the common. axis 29 and cooperates with the switch terminal 30 mounted upon the standorthe othe'r of theterminals 31', 32, of the cooperating switch S. Ifthe latter. bd'of like construction to the. present, theco'ntrol ard 16." It is obvious that whenthe blade :25. is in contact with the arm 24 of the minal -30. In either position of the switch Y bartherefore the line X is connected to one i of the hall light from either switch is readily understood. i p The mechanism for operating the switch bar'is of well known constructionand is not illustrated in detail here-further than to The construction illustrated f rom the three-point switches now commonly in relativelyex nsive-metal arts. The

switch bar itself s readily made y'a stamp show the'usual rocker bar 33 and springeliminates 8.0- 1nuse,,not only .cueof the switchterminals but also portion of one of the switch blades and thus efiects a very-appreciable saving switch as well as eliminates any danger of:

a failure of connectionv between the two switch blades. The Y-shapedterminal.22

is as readily connected to the standard 14 as 'a. single terminal by a-s'imple'rivetingoperation. While the form of'this terminal may be modified in various ways prefer that illustrated. Yarious modifications lot; construction and variation of detail ,will'i'eadily. occur (tofrom what I claimia's my invention.

I claim:

those skilled'in mesa without departihg 1. In an electric switch-comprising a line terminal and two branch -tjrminals, a two position oscillating bridgeineinber connecting at different pointslwit'h the line terminal in the difi'erent positions of the switch and alternately with the branch terminals,'a switch spring opci-atively connected to the bfllging member and push buttons for energizing said spriug'to move the bridging member with snap action to its successive positions.

2. An electric switch comprising a line terminal and two branchterminals, 0. two position switch bar having a double arm blade connecting with the line terminal in both positions and withone of the branch terminals inone position of the switch, and havin also a one arm blade connecting with t e other branch terminal in that posi name to this spec] fication.

the line terminal in-both pos ing bridge extendin .between 'said blades and intergral therewith, for electrically and mechanically connecting Y said blades together. v

4. In an electric switch having a line terminal and two branch terminals, a novel two position switch bar comprising a pair of spaced blades and a connecting bridge, said bridge and blades being integral, and one of said blades comprism a pair of contact arms, and the other being. a single arm,'the former blade being adapted to engage the line terminal, in both positions of the bar, and one of the branch terminals in one position of the .bar, while the single arm blade 15 adapted to engage the other branch terminal in bar.

In testimony whereof I have signed my CLARENCE a BATES. Wltnesses:

' G. W.-Gooi)nmoa, H. M. wromr.

the other position of the. 

